{
  "annotation_id": "b7616364-5761-41de-8bf1-7d6661796ea5",
  "date_created": "2026-03-02T18:02:30.798000Z",
  "date_modified": "2026-03-02T18:02:30.798000Z",
  "file_hash": "30540c8e48b1b703964578230afaa4dee973cb954f765bbc0ff634ef7041de7d",
  "private": false,
  "record": {
    "abstract": "We derive an experimentally observable lower bound on concurrence of mixed\nquantum states in terms of an entanglement witness, relating measurements on\nsingle states with those on two copies.",
    "arxiv_id": "quant-ph/0609024",
    "authors": [
      "Florian Mintert"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.75.052302",
    "title": "Concurrence via entanglement witnesses",
    "url": "https://arxiv.org/abs/quant-ph/0609024"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "95baea3b-acb7-4c60-aaad-c84f3f638ced",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}